Fixing Unreliable Office Entry Doors for a Los Angeles Food Industry Client in 4 Hours
The glass aluminum entry/exit doors at a food industry facility in Los Angeles, CA were not closing reliably, making it hard for customers and visitors to come and go and repeatedly interrupting staff. InSev Tech inspected both the office-side and dock-side doors, replaced two defective overhead concealed closers, secured loose closer hardware with thread-locking compound, and had all doors repaired and tested within 4 hours.
The Challenge
The client's glass aluminum entry/exit doors were not closing reliably. Customers and visitors found it difficult to enter and leave the office, and staff were repeatedly interrupted by door problems. Inconvenient access slowed down daily work and left a poor first impression for a busy food industry business.
Our technicians inspected both the office-side and dock-side doors and addressed each problem at its source.
Entry/Exit Glass Aluminum Doors (Office Side)
- 1
Removed 4 glass aluminum entry/exit doors leading into the offices.
- 2
Removed 2 defective overhead concealed closers and disposed of them properly.
- 3
Installed 2 new overhead concealed closers with all supporting hardware.
- 4
Reinstalled door covers, securing screws, and caps.
- 5
Reinstalled both doors into the opening.
- 6
Adjusted closing speeds for proper operation.
- 7
Tested the doors multiple times and made minor adjustments as needed.
Doors from the Dock Side
- 1
Removed doors and covers to access the concealed closers.
- 2
Inspection showed 2 brand new closers were already installed.
- 3
Found the root cause: extremely loose closer hardware, with fasteners falling out, causing intermittent door closure failures.
- 4
Secured all hardware and applied blue thread-locking compound (Loctite) to all fasteners.
- 5
Reinstalled doors and covers into the opening.
- 6
Made minor adjustments to closer speeds.
- 7
Tested multiple times with no issues.
Materials Used
2 new overhead concealed closers.
1 bottle of blue Loctite thread-locking compound.
2 closer lubrication and adjustment services.
The Result
All doors were repaired and tested within 4 hours. They now function properly and close consistently, so customers and staff can come and go without interruption. The client was satisfied with the work.

Why It Matters
Replacing a part does not always solve the problem. On the dock side, the closers were already new. The real issue was loose hardware, and fixing that is what stops the failure from coming back. A proper inspection saves repeat service calls and keeps your entrance working.
Is Your Automatic Door Giving You Trouble?
If your doors are closing inconsistently, sticking, or slamming, contact InSev Tech for an inspection. We provide commercial and industrial door, dock, and gate lifecycle services, from repair to preventive maintenance.
Service Details
- Location
- Los Angeles, CA
- Industry
- Food industry
- Facility
- Office entrance and dock-side doors
- Product
- Automatic door / entry-exit glass aluminum doors
- Root cause
- Defective concealed closers (office side); loose closer hardware (dock side)
- Time to complete
- 4 hours
Project Gallery
Frequently Asked Questions
Why does a commercial glass entry door stop closing reliably?
Common causes are a worn or defective overhead concealed closer, incorrect closing-speed adjustment, or loose closer hardware. On this job, the office-side closers were defective, while the dock-side closers were new but their fasteners had worked loose.
Does replacing the closer always fix the problem?
No. On the dock side, the closers were already brand new. The real cause was extremely loose closer hardware with fasteners falling out, so securing the hardware is what stopped the intermittent closure failures.
What is an overhead concealed closer?
It is a door closer mounted inside the head frame above a glass aluminum door, hidden behind a cover. Servicing it requires removing the door and covers to access the closer.
How long did the repair take?
All doors on both the office side and the dock side were repaired and tested within 4 hours.
How do you keep closer hardware from loosening again?
We secured all hardware and applied blue thread-locking compound (Loctite) to every fastener, adjusted closer speeds, and tested the doors multiple times with no issues.
